My mom has been saying this for years -- if you've got a cold, there must be a stress factor involved. She didn't use those words exactly but the message is the same. She would talk about balance and incongruence - try digesting that with a stuffed head, runny nose and sore throat.

But I do have to say - I used to get colds all the time. But then I had my deviated septum fixed (more than 10 years ago) and I can't remember the last time I had the sniffles. Whenever it was, I'm sure it was because I was stressed out.